Khan Tolossu of Mongolia

Khan Tolossu of Mongolia (749-790) was the Khan of the Uyghur Khaganate from 789 to 790, succeeding Khan Alp-Qutlugh of Mongolia and preceding Khan Qutlugh II of Mongolia.

Biography
Tolossu was born in 749 to the Manichaean Yaghlakar Uyghurs, and he was the son of Khan Alp-Qutlugh of Mongolia. Tolossu inherited an empire that came under stress from the Tibetans and Karluks, who took Beshbalik (present-day Jimsar County, Xinjiang) and the Futu Valley, respectively. He died in 790 after only one year of being Khan, and his son Khan Qutlugh II of Mongolia succeeded him.